package risoe.syslab.fhnew.db;

/*
 * Copyright (c) 2012-2014, Technical University of Denmark (DTU)
 * All rights reserved.
 * 
 * The Flexhouse 2.0 platform ("this software") is licensed under the
 * BSD 3-clause license.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *   - Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *   - Neither the name of DTU nor the names of its contributors may be used to
 *     endorse or promote products derived from this software without specific
 *     prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE TECHNICAL UNIVERSITY OF DENMARK BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

import java.util.HashMap;

import risoe.syslab.fhnew.config.PlatformConfig;
import risoe.syslab.fhnew.core.MonitoredModule;
import risoe.syslab.fhnew.hw.ProcessImage;

/**
 * Central logging facility. Spawns three separate loggers: NumericalLogger, 
 * PlatformEventLogger and HouseEventLogger.
 * @author olge
 */
public class LoggerManager implements MonitoredModule {

  private static final int INTERVAL = 1000; //ms
  private static final int ROTATION = 86400; //seconds
  private static String NUMLOGPATH = "tmp/";
  private static String PLATFORMLOGPATH = "tmp/";
  private static String HOUSELOGPATH = "tmp/";
  private NumericalLogger numlog;
  private HouseEventLogger houselog;
  private PlatformEventLogger plaflog;
  private boolean running;
  
  public LoggerManager(PlatformConfig platformConfig) {
	NUMLOGPATH = platformConfig.getParameter("numerical_logger_path", "tmp/");
	HOUSELOGPATH = platformConfig.getParameter("house_logger_path", "tmp/");
	PLATFORMLOGPATH = platformConfig.getParameter("platform_logger_path", "tmp/");
	  
    plaflog=new PlatformEventLogger();
    houselog=new HouseEventLogger();
    numlog=null;
    running=false;
  }
  
  public void startLoggers() {
    running=true;
    plaflog.start(ROTATION, PLATFORMLOGPATH);
    houselog.start(ROTATION, HOUSELOGPATH);
    if (numlog!=null)
      numlog.start(INTERVAL, ROTATION, NUMLOGPATH);
  }
  
  public void stopLoggers() {
    running=false;
    numlog.stop();
    houselog.stop();
    plaflog.stop();
  }
  
  public void setProcessImage(ProcessImage pi) {
    numlog=new NumericalLogger(pi);
    if (running) {
      numlog.start(INTERVAL, ROTATION, NUMLOGPATH);
    }
  }

  public NumericalLogger getNumericalLogger() {
    return numlog;
  }
  
  public PlatformEventLogger getPlatformEventLogger() {
    return plaflog;
  }
  
  public HouseEventLogger getHouseEventLogger() {
    return houselog;
  }

  @Override
  public Status getStatus() {
    if ((numlog.isRunning()) && (plaflog.isRunning()) && (houselog.isRunning())) {
      return MonitoredModule.Status.Running;
    }
    else {
      return MonitoredModule.Status.Fault;
    }
  }

  @Override
  public String getFaultMessage() {
    StringBuffer sb=new StringBuffer();
    if (!numlog.isRunning()) {
      sb.append("NUMLOG: "+numlog.getErrorString()+", ");
    }
    if (!plaflog.isRunning()) {
      sb.append("PLAFLOG: "+plaflog.getErrorString()+", ");
    }
    if (!houselog.isRunning()) {
      sb.append("HOUSELOG: "+houselog.getErrorString());
    }
    return sb.toString();
  }
  
}
